What Syllogism Questions Test
- Basic two-statement syllogisms
- Multi-statement chains (three or more premises)
- Possibility conclusions ("can be true")
- Either-or (complementary pair) cases
Question bank coverage by sub-pattern
How Syllogism Appears in RRB NTPC
Syllogism is part of the General Intelligence & Reasoning section (30% of the RRB NTPC syllabus).
Syllogism Solved Examples for RRB NTPC
12 exam-pattern syllogism questions from the practice bank, each with a full solution.
Statements: All dogs are animals. All animals are living beings. Conclusions: I. All dogs are living beings. II. All living beings are dogs.
- A.Only Conclusion I followsCorrect
- B.Only Conclusion II follows
- C.Both I and II follow
- D.Neither I nor II follows
Solution
All dogs are animals, and all animals are living beings. By transitivity, all dogs are living beings (Conclusion I follows). However, we cannot conclude that all living beings are dogs — there are many living beings that are not dogs (Conclusion II does not follow).
Statements: All A are B. Some B are C. All C are D. No D is E. Conclusions: I. Some B are D. II. No A is E. III. Some C are B. Choose the correct conclusion.
- A.Only I and II follow
- B.Only II and III follow
- C.Only I and III follow
- D.All I, II and III followCorrect
Solution
I. Since some B are C and all C are D, it follows that some B are D. II. Since all A are B, all C are D and no D is E, then no A is E. III. Given that some B are C, it's also true that some C are B. Hence, all three conclusions follow.
Statements: All apples are bananas. All bananas are oranges. Some oranges are grapes. All grapes are mangoes. Conclusions: I. Some mangoes are oranges. II. All apples are oranges. III. Some grapes are bananas. IV. All mangoes are apples.
- A.Only I and II followCorrect
- B.Only II and III follow
- C.Only I, II and III follow
- D.Only I and IV follow
Solution
Given: All apples are bananas, All bananas are oranges, Some oranges are grapes, All grapes are mangoes. I. 'Some mangoes are oranges' - True. All grapes are mangoes, and some oranges are grapes, so some mangoes are oranges. II. 'All apples are oranges' - True. All apples are bananas, and all bananas are oranges, so all apples are oranges. III. 'Some grapes are bananas' - Not necessarily true. Only some oranges are grapes, but we can't conclude that some grapes are bananas. IV. 'All mangoes are apples' - Not necessarily true. All grapes are mangoes, but there's no link to suggest all mangoes are apples.
Based on the logical principles of Complementary Pairs and Either-Or, determine the valid outcome or relationship.
- A.Neither Conclusion I nor Conclusion II follows
- B.Conclusion II follows logically from the given premise
- C.Both Conclusion I and Conclusion II follow logically
- D.Conclusion I follows logically from the given premiseCorrect
Solution
In Complementary Pairs and Either-Or, analyzing the relationship between the terms verifies that Conclusion I is a direct and necessary deduction.
Based on the logical principles of Basic Syllogism, determine the valid outcome or relationship.
- A.Conclusion I follows logically from the given premiseCorrect
- B.Neither Conclusion I nor Conclusion II follows
- C.Conclusion II follows logically from the given premise
- D.Both Conclusion I and Conclusion II follow logically
Solution
In Basic Syllogism, analyzing the relationship between the terms verifies that Conclusion I is a direct and necessary deduction.
Statements: All tracks are rails. All rails are metal. No metal is plastic. (NTPC Multi-Syl 5) Conclusions: I. No track is plastic. II. Some metal are tracks.
- A.Both conclusions I and II followCorrect
- B.Only conclusion I follows
- C.Only conclusion II follows
- D.Neither follows
Solution
Tracks are metal, which has no intersection with plastic. No track is plastic (true) and Some metal are tracks (true). Both follow.
In an E-type proposition ('No A is B') (NTPC Dist 3):
- A.Both Subject and Predicate are distributedCorrect
- B.Subject only is distributed
- C.Predicate only is distributed
- D.Neither is distributed
Solution
Both the subject and the predicate terms are distributed in a universal negative proposition.
Based on the logical principles of Possibility Cases, determine the valid outcome or relationship.
- A.Neither Conclusion I nor Conclusion II follows
- B.Conclusion I follows logically from the given premiseCorrect
- C.Conclusion II follows logically from the given premise
- D.Both Conclusion I and Conclusion II follow logically
Solution
In Possibility Cases, analyzing the relationship between the terms verifies that Conclusion I is a direct and necessary deduction.
Statements: All pens are books. Some books are copies. No copy is a page. Conclusions: I. Some pens being pages is a possibility. II. Some books being pages is a possibility. Which of the following conclusions does NOT possibly follow?
- A.Only I
- B.Only II
- C.Both I and II
- D.Neither I nor IICorrect
Solution
Statements: All pens are books. Some books are copies. No copy is a page. Conclusion I: Some pens being pages is a possibility. Since all pens are books, and some books are copies, and no copy is a page, pens cannot be pages. Thus, the possibility of pens being pages does not exist. Conclusion II: Some books being pages is a possibility. Since some books are copies and no copy is a page, those books that are copies cannot be pages. However, some books are not copies, and therefore could potentially be pages. The part of books which are copies, cannot be pages. Thus the possibility of books being pages does not exist. Therefore, neither I nor II does NOT possibly follow.
Which category does 'No train is late' belong to (NTPC Prop Type 3)?
- A.Universal Negative (E-type)Correct
- B.Universal Affirmative (A-type)
- C.Particular Affirmative (I-type)
- D.Particular Negative (O-type)
Solution
'No S is P' is a Universal Negative proposition (E-type).
Statements: All bogies are coaches. Some coaches are express. (NTPC Poss True 1) Conclusions: I. Some bogies being express is a possibility. II. All bogies being express is a possibility.
- A.Both conclusions I and II followCorrect
- B.Only conclusion I follows
- C.Only conclusion II follows
- D.Neither follows
Solution
Bogies and express can overlap within coaches without violating premises. Both possibilities follow.
Based on the logical principles of Reverse Syllogism & Coded Syllogism, determine the valid outcome or relationship.
- A.Conclusion II follows logically from the given premise
- B.Both Conclusion I and Conclusion II follow logically
- C.Conclusion I follows logically from the given premiseCorrect
- D.Neither Conclusion I nor Conclusion II follows
Solution
In Reverse Syllogism & Coded Syllogism, analyzing the relationship between the terms verifies that Conclusion I is a direct and necessary deduction.
Syllogism — Frequently Asked Questions
What is the fastest method for syllogism questions?
Venn diagrams — draw the minimal diagram the statements force, and test each conclusion against it. For "possibility" conclusions, ask instead whether ANY valid diagram allows it.
When does an either-or answer apply?
When two conclusions are individually not certain but form a complementary pair — same subject and predicate, covering all cases between them (e.g. "some" + "no"). Then "either I or II follows".
How many Syllogism practice questions does Parikshala have for RRB NTPC?
91 exam-pattern Syllogism questions for RRB NTPC Reasoning, each with a step-by-step solution. Practice is free — no sign-up needed to start.